Ergonomic chair



FIG. 1 is a perspective view of the ergonomic chair embodying my new design;

FIG. 2 is a frontal view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a side view thereof. 

The ornamental design for an ergonomic chair, as shown and described. 